Pliers.



c. HILLER. A

PLIBRS. APPLICATION FILED HAY 14, 1908.

905,074. Patented Nov.v 24, 1908.

CHARLES HILLER, OF ST. LOUIS, MISSOURI.

PLIERS.

Specicationof Letters Patent.

Patented Nov. 24, 1908.

Application filed. May 14, 1908. Serial No. 432,774.

To all whom it may concern:

Be it known that I, CHARLES I-IILLER, a citizen of the United States, and resident `of St. Louis, Missouri, have invented certain new and useful Improvements in Pliers, of which the following is a specification containing a full, clear, and exact description,

reference being had to the accompanying.

drawings, forming a part hereof.

My invention relates to improvements in crimping pliers, and the object of my invention is to provide a simple, inexpensive pair of pliers, the jaws of which are provided with coinciding ribs, in order that when said jaws are'clamped upon a piece of sheet metal, such as the end of .stovepipe, thesame will be crimped, or corrugated. f

To the above purposes, my invention consists in certain novel features of construction and arrangement of parts, which will be hereinafter more fully set forth, pointedout in the claims, and illustrated in the accompanying drawings, in which j Figure l is a perspective viewof a pair of pliers constructed in accordance with myinvention; Fig. 2 is an elevation of the forward end of the pliers, showing the jaws in vertical section; Fig. 3 is a` cross section taken on the line 3-3 ofF ig. 2; Fig.4 is a cross section taken on the line i-lof Fig. 2; Fig. 5 is a perspective view of a portion of'a stovepipe joint, with; the parts partially crimped or corrugated with my improved pliers.

In the construction of my improved pliers, I make use of a pair of circular plates l, which are placed side by side, and passing through the centers of said platesis a pivot pin 2.

Formed integral with each plate, and eX- tending rearward therefrom is a handle 3; and formed in one of-the side faces of each of the handles 3 is a triangular notchV 4, which notches are arrangeddirectly op osite one another, and are immediately adjacent the plates 1; and said notches being for the purpose of engaging on the corners of a nut to tighten orloosen the same by means of the pliers.

Formed integral with the plates 1, directly opposite the handles 3, are the jaws 5, the outer portions of the engaging faces of which jaws are perfectly flat, as designated by 6;i

and formed integral with the rear portions of the engaging faces of the jaws is a series of longitudinally disposed ribs or` corrugations 7, which ribs start at the rear ends of the Hat faces 6 and gradually increase in height toward the rear ends of the jaws; and these ribs are so disposed as that the ribs on one jaw engage in the V-shaped grooves between the ribs on the opposite jaw, and thus when the pliers are utilized for crimping the edge of sheet metal, the indentations or corrugations are higher or more pronounced at the immediate edge of the piece of sheet metal and gradually become more shallow toward the body of the section of sheet metal.

A pair of pliers of my improved construe-- tion are simple and inexpensive, may be used as a wrench for tightening and loosening nuts and the like, and the jaws of the pliers being particularly adapted for crimping' or corrugating the edges of sheet metal.

I claim The herein described pliers, comprising a pair of handles pivoted to one another' at one end, a pair of aws integral with the handles,

vthe outer portions of the faces of which jaws M. P. SMITH, E. L.' WALLACE. 

